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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 12 Jun 2018
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      Replying to @marcan42 @dragosr and

      Seriously, you have *no excuse* for this stuff. The moment you saw "mmc1" you should've looked at sysfs to find out what that is used for, or the device tree to figure out how it's configured. This is just shoddy research. https://github.com/raspberrypi/linux/blob/rpi-4.14.y/arch/arm/boot/dts/bcm2837-rpi-3-b.dts …

      1 reply 0 retweets 1 like
    2. dragosr‏ @dragosr 12 Jun 2018
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      Replying to @marcan42 @AndreaBarisani and

      Don't care what it's used for there, as long as adversary has multiple control links in (probably multiple operators). Static thinking again. A few lines of code and dev will deploy other use in 15 minutes. Analysis needs to wait for control neutralization/isolation.

      1 reply 0 retweets 0 likes
    3. Hector Martin‏ @marcan42 12 Jun 2018
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      Replying to @dragosr @AndreaBarisani and

      You said "How many of your raspis have an mmc1?" and I explained to you how the answer is ALL OF THEM (of this model). Are you going to ever admit you confused something completely benign for an IOC, or just keep bullshitting forever?

      1 reply 0 retweets 2 likes
    4. dragosr‏ @dragosr 12 Jun 2018
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      Replying to @marcan42 @AndreaBarisani and

      Look at some raspi boot dmesgs and you will get what I'm talking about. I do that so often I can sometimes pick out lines that are wierd as it scrolls by even. Please stop being patronizing. Maybe these folks are already on your some of your computers. Would you know?

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 12 Jun 2018
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      Replying to @dragosr @AndreaBarisani and

      I'm still waiting for a single piece of verifiable evidence that something is out of place. Where are these "weird" boot logs? Perhaps you should start considering that if everyone else can find a benign explanation for everything you point out, maybe the problem is in your head.

      3 replies 0 retweets 2 likes
    6. dragosr‏ @dragosr 12 Jun 2018
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      Replying to @marcan42 @AndreaBarisani and

      You seem to think my job is to convince you. My task's securing my computers. Ocasionally advice for others own good/public benefit. And pick big problems/threats for conferences so folks can work on. You think I'm crazy? Enjoy life in the Prepositioned Cyberasset Club.

      1 reply 0 retweets 0 likes
    7. Hector Martin‏ @marcan42 12 Jun 2018
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      Replying to @dragosr @AndreaBarisani and

      *My* job is security, and when stuff like BadBIOS makes headlines it's an embarrassment to my field. *You* have a delusional paranoia problem, and I'm trying to help you because otherwise you'll convince other, less clueful people of your nonsense and it'll spiral out of control.

      3 replies 0 retweets 4 likes
    8. dragosr‏ @dragosr 12 Jun 2018
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      Replying to @marcan42 @AndreaBarisani and

      Meanwhile I consider such obliviousness to advanced attackers somewhat embarrasing. I think we have detente.

      1 reply 0 retweets 0 likes
    9. Hector Martin‏ @marcan42 12 Jun 2018
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      Replying to @dragosr @AndreaBarisani and

      I'm cognizant of advanced attackers. They just don't happen to be your problem. Your problem is delusional paranoia.

      1 reply 0 retweets 1 like
    10. dragosr‏ @dragosr 13 Jun 2018
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      Replying to @marcan42 @AndreaBarisani and

      Really now? When was the last time you analyzed a rootkit on your machine? Caught any APTs and learned any cool new tricks from them lately? That's the fun part when they suprise you. But it sounds like you'd rather stay sleepy and oblivious.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 13 Jun 2018
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      Replying to @dragosr @AndreaBarisani and

      You see, my thing happens to be *hardware* security, not soft APTs. Which is what *you're* stumbling through, cluelessly mistaking every second triviality for an IOC. I have no idea how to analyze Windows kernel rootkits but I can damn well tell you your scope traces are normal.

      12:05 AM - 13 Jun 2018
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      • SΞbastien F4GRX
      2 replies 0 retweets 1 like
        1. New conversation
        1. Hector Martin‏ @marcan42 13 Jun 2018
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          Replying to @marcan42 @dragosr and

          Are machines compromised? Who knows, but I am carefully observant of their behavior and have no reason to believe that they are. But if I *had* a reason, I wouldn't be tweeting mains noise scope traces. Within 24 hours the world would have IDBs of whatever it was if it were real.

          2 replies 0 retweets 2 likes
        2. Hector Martin‏ @marcan42 13 Jun 2018
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          Replying to @marcan42 @dragosr and

          Because this *is* my field, I've pentested SoCs and embedded devices, I know where you can hide things and where you can't, I know how Flash memory buses work, I have the tools and I know how to use them. And *you* clearly don't.

          2 replies 0 retweets 1 like
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        1. dragosr‏ @dragosr 13 Jun 2018
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          Replying to @marcan42 @AndreaBarisani and

          "Soft" APTs. Heh. How soft on the Rockwell scale? Yet I've been trying to show some scope traces corroborated by other items, and you insist you know more. I've posted enough stuff for analysis. The rest is left as an exercise for the reader. Maybe I'm wrong, don't think so yet.

          1 reply 0 retweets 0 likes
        2. Hector Martin‏ @marcan42 13 Jun 2018
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          Replying to @dragosr @AndreaBarisani and

          Not a single person with experience has agreed with your tweets. I'm taking my time to point out your mistakes. Everyone else is rolling their eyes. You've showed me some scope traces of mains/PSU noise. You've pointed out the WiFi SDIO. You've butchered a magjack. What next?

          0 replies 0 retweets 0 likes
          3. End of conversation

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